/*标签选择器*/
body {
    background-color: #e2dfe0;
    text-align: center;
    /*background-image: url("body-img.jpg");*/
    /*background-repeat: round;*/
}

/*类选择器*/
.css-class-demo {
    background-color: red;
}

.label-span {
    font-weight: bold;
    font-size: 12px;
}

/*id选择器*/
#apple {
    background-color: blue;
}

#password-id {
    background-color: yellow;
    color: red;
}

#hezi-demo {
    height: 200px;
    width: 600px;
    background-color: red
}

#hezi-demo > div {
    width: 80px;
    height: 190px;
    background-color: pink;
    border: 1px solid blue;
    margin: 1px 2px 3px 4px;
    float: left
}

#hezi-demo > div:hover {
    background-color: aqua;
}

